What alcohol would be used as the starting material to obtain 1-methylcyclohexene as a product in an E1 elimination reac...
What alcohol would be used as the starting material to obtain 1-methylcyclohexene as a product in an E1 elimination reaction when using sulfuric acid as a catalyst and H2O as the solvent to pull the hydrogen from the carbocation. Please explain why that alcohol would be used.
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What alcohol would be used as the starting material to obtain 1-methylcyclohexene as a product in an E1 elimination reac...
Starting with 1.0 g of 1-methylcyclohexanol, you recover 0.5 g of 1- methylcyclohexene. What is the...
Starting with 1.0 g of 1-methylcyclohexanol, you recover 0.5 g of 1- methylcyclohexene. What is the percent yield? 1) 100 2) 30 3) 49 4) 60 Question 3 (2 points) Which of the following cations is most stable? 1) the methyl cation 2) the tert-butyl cation 3) the iso-propyl cation Question 4 (2 points) What is the role of sulfuric acid in today's reaction? Question 4 (2 points) What is the role of sulfuric acid in today's reaction? 1) It...
2. If one were esterifying an expensive alcohol with an expensive carboxylic acid derivative, would it...
2. If one were esterifying an expensive alcohol with an expensive carboxylic acid derivative, would it be wiser to use the acid chloride or acid anhydride reagent? Why? 3. Why is so much NaOH used in the extraction? Recall that only four drops (small amount) of sulfuric acid were used as a catalyst. Esters are an important class of organic molecules, which are formally derived from alcohols and carboxylic acids. Esters occur widely in nature and are often an important...
Complete the electron-pushing mechanism for the E1 reaction when 2-methylbutan-2-ol is treated with 20% sulfuric acid....
Complete the electron-pushing mechanism for the E1 reaction when
2-methylbutan-2-ol is treated with 20% sulfuric acid.
Hint: The E1 mechanism involves dissociation of the hydroxyl
group from the substrate. The acid is used to convert the hydroxyl
group to a good leaving group. Do not delete any pre-drawn
bonds/charges/lone pairs.
Complete the electron-pushing mechanism for the E1 reaction when 2-methylbutan-2-ol is treated with 20% sulfuric acid Map a) Use two curved arrows to show the fast b) Use a curved...
What is Zaitsev’s rule? Give the mechanism for the acid-catalyzed E1 reaction of 2-butanol. Give the...
What is Zaitsev’s rule? Give the mechanism for the acid-catalyzed E1 reaction of 2-butanol. Give the mechanism for the base-catalyzed E2 reaction of 2-bromobutane. Draw all possible products. You expect three products from the elimination reaction 2-butanol. What are they? The E2 mechanism is a one-step mechanism. True or False? Explain. Which of these two alcohols would you expect to be more reactive under H3PO4/aqueous conditions? Why? Give the structure of the main product in both cases. 1-phenyl-1-propanol 1 -cyclohexyl-1-propanol...
Elimination Reactions 1) Where would the starting material, 2-methylcyclohexanol, come out on a gas chromatogram relative...
Elimination Reactions 1) Where would the starting material, 2-methylcyclohexanol, come out on a gas chromatogram relative to the alkene product(s) if they were run at the same time? Explain why. 2) What is the purpose of the sodium bicarbonate solution? Saarum bicarbOkare aaws Out/get Tid Of tHe cia trace 3) If you started with 4.5 mL of 2-methylcyclohexanol, what is the theoretical yield of CH2 in grams? Assume a 1:1 molar ratio of reactants: products. 4) Why is concentrated phosphoric...
We made esters from carboxylic acids and alcohol. (for one of them, acetic acid + isopentyl...
We made esters from carboxylic acids and alcohol. (for one of them, acetic acid + isopentyl alcohol + couple drops of sulfuric acid). Could someone please explain those. Thank you 1. Consider if we had prepared high molecular weight esters, what problems would this pose regarding our method of analysis 2. We used sulfuric acid as a catalyst, but carboxylic acids are a reagent in this reaction. Would simply using excess carboxylic acid work as efficiently as sulfuric acid to...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or 2) will occur. Alkyl...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or 2) will occur. Alkyl Halide Substitution: Base Strength: Mechanism Type: 2° 3° Methyl Strong E1 1° Weak E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: NaOCH Challenge Problems: Synthesis: Predicted Ability: Good Average Poor Actual Ability: Good Average Poor Propose a synthesis from the starting material to obtain the indicated goal molecule. Note that any...
Given that the SN2 mechanism requires the nucleophile to force out the leaving group, what would...
Given that the SN2 mechanism requires the nucleophile to force out the leaving group, what would you expect the product ratio of alkyl bromide to alky chloride be when sulfuric acid is the solvent? Also given that the SN1 mechanism requires the nucleophile to react with an empty p orbital of a carbocation involving bond formation, what would you expect the product ratio of alkyl bromide to alky chloride be when sulfuric acid is the solvent? R-Br > R-Cl or...
3) For the reaction below, would the starting material (chalcone) or the product have longer retention...
3) For the reaction below, would the starting material (chalcone) or the product have longer retention times in a GC analysis using a non-polar column? Please explain. What is the difference in molecular weight between starting material and product? Pd/C + H2
1. [10 pts] Consider the elimination reaction for the following alkyl halide with sodium methoxide in...
1. [10 pts] Consider the elimination reaction for the following alkyl halide with sodium methoxide in methanol (Na* OCH, CH,OH). CH NaOme MeOH CH Compound A Problem 2c Draw the major expected organic product (a) Redraw Compound A as seen in Viewpoint I below left as a Newman projection on the template provided in Problem 2a (below). Hint: Fill in missing Hs ar C2 and C3 to help you get started! (b) Rotate the C2 C3 bond to obtain the...
Starting with 1.0 g of 1-methylcyclohexanol, you recover 0.5 g of 1- methylcyclohexene. What is the percent yield? 1) 100 2) 30 3) 49 4) 60 Question 3 (2 points) Which of the following cations is most stable? 1) the methyl cation 2) the tert-butyl cation 3) the iso-propyl cation Question 4 (2 points) What is the role of sulfuric acid in today's reaction? Question 4 (2 points) What is the role of sulfuric acid in today's reaction? 1) It...
2. If one were esterifying an expensive alcohol with an expensive carboxylic acid derivative, would it be wiser to use the acid chloride or acid anhydride reagent? Why? 3. Why is so much NaOH used in the extraction? Recall that only four drops (small amount) of sulfuric acid were used as a catalyst. Esters are an important class of organic molecules, which are formally derived from alcohols and carboxylic acids. Esters occur widely in nature and are often an important...
Complete the electron-pushing mechanism for the E1 reaction when
2-methylbutan-2-ol is treated with 20% sulfuric acid.
Hint: The E1 mechanism involves dissociation of the hydroxyl
group from the substrate. The acid is used to convert the hydroxyl
group to a good leaving group. Do not delete any pre-drawn
bonds/charges/lone pairs.
Complete the electron-pushing mechanism for the E1 reaction when 2-methylbutan-2-ol is treated with 20% sulfuric acid Map a) Use two curved arrows to show the fast b) Use a curved...
Elimination Reactions 1) Where would the starting material, 2-methylcyclohexanol, come out on a gas chromatogram relative to the alkene product(s) if they were run at the same time? Explain why. 2) What is the purpose of the sodium bicarbonate solution? Saarum bicarbOkare aaws Out/get Tid Of tHe cia trace 3) If you started with 4.5 mL of 2-methylcyclohexanol, what is the theoretical yield of CH2 in grams? Assume a 1:1 molar ratio of reactants: products. 4) Why is concentrated phosphoric...
For each of the following reactions, determine which ELIMINATION mechanism (E1 or 2) will occur. Alkyl Halide Substitution: Base Strength: Mechanism Type: 2° 3° Methyl Strong E1 1° Weak E2 Draw the mechanism that leads to ALL products for the reaction. Finally, underline the major product of the elimination reaction: NaOCH Challenge Problems: Synthesis: Predicted Ability: Good Average Poor Actual Ability: Good Average Poor Propose a synthesis from the starting material to obtain the indicated goal molecule. Note that any...
3) For the reaction below, would the starting material (chalcone) or the product have longer retention times in a GC analysis using a non-polar column? Please explain. What is the difference in molecular weight between starting material and product? Pd/C + H2
1. [10 pts] Consider the elimination reaction for the following alkyl halide with sodium methoxide in methanol (Na* OCH, CH,OH). CH NaOme MeOH CH Compound A Problem 2c Draw the major expected organic product (a) Redraw Compound A as seen in Viewpoint I below left as a Newman projection on the template provided in Problem 2a (below). Hint: Fill in missing Hs ar C2 and C3 to help you get started! (b) Rotate the C2 C3 bond to obtain the...
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